Drill-bit for wells.



R. D. MARTIN.

Patented J an. 2, 1917.

ROBERT DRUEY MARTIN, OF HUMBLE, TEXAS.

DRILL-BIT FOR WELLS.

Specificatlon of Letters Patcnt.

l'utvml Jz. 2. 191 7.

Application filed August 7, 1916. Serial No. 113.652.

Y?) all 'whom it may concem:

Be it known that I, Rona'r I). Ma''x, a citizen ot' the United States, residing at; 'Humhlza in the County of Harris and tatn of Texas, have inventad certain new and useful Imp-ovements in 'Di-ill-Bits for Wclls; and I do dcclure the following to be a. full, clear, and exact 'lescription of the invention, such as will unahle others skilled in thi nrt to which it appe-tains to make and nsc the same.

This invention 'elat'cs generally to tools for drillin deep walla, hat no'c particularly to a h'ill hit of improved consL'nc-tinn i'm' sn'h purpose.

.llv'utofu'c much dilliuulty has hum axa-riwud in 'boi-ing deep walla he'ansc UE the `fact; that after tha 'nta'y hit` has vicu snnk a considerhlc distance in the :rnnnd during the (I'illing npo'ation a Sticky carthy suhstancc, 'usually gnnhn, sticks ta the hit and prm'unts a further efl'cient ona-alina. Nuna'nns n 'aus have been enpoycd in nvo'cnirg this difliculty, and among them, water under p'esan'a has benn supplied u the, bit but these. are still dcective hccansthu strca' of Water does not cover all paris ul' the hit, and does not come into oli'cctii'u operation until soma of the urthy material has actually stuck to the hit.

It is thc'ufo'c, the object. of the p'csunt invnntinn to overcome the above diliiculby and to improve gene lly upon the dofuc tivo. devices of this character by the pravision of a hit to which water under pressur: is supplied to ali parts of th( same.

Tha. invenlion consists of ci-rtain novul features of Construction, and the conbiatina and arrangoment of parts as will be.

hercinafter fully described and claimed.

In the accmnpuying drawings forming a. part of the spccication and in which similar referenca characters designate like pa'ts throughout the several views, Figura 1 is a front clovation of a bit constmcted in accnrdanco with this invention; Fig. 2 is a lungitudiaal snctioaal view taken on the plane of the lina '2--2 of Fig. 1; and, Figs. 3 and 4 are horizontal sectional views taken on the planes of the iinen 3-3 and 4---4 of afert-ing more. particularly to the drawings, the reference numeral 1 closignat-s the cylintl-ical shank Of the bit. As shown the "shnnk 1 is cxternaliv thraudod for detachable connection to the usual tbular bit tum through which nau-i' under Pl'|.'.$-ll:'' s aupph'c'h and by Wilil'il thi l is -u' l The lower and of thv shanh 1 is Ham-nad Lu fn' a pair nf wings L'. which l'v'nin-.iu in ultng udgss 3. Tu l'acilitah` thu har1wning of hasa cutiing edcs ;3 hahm''- -l--- cl''t'd it halli-nad end, nl' tha shal: is provided on ita opposita silw with n-- trally a''agud longitudinall uxtundi' gmoves 2'. i

Thu nppe' and ni' the shznk l is pru\ i lvd with a pair nl' dianwirh-all oppnsihi ngltudinall' vxtonding hoi-vs il" tha ;danipass'- in.: t'hng'h lk' arms: of whi-h is dismcl aL right. anglvs in ihn) wings L'. wiil) lh l wvr end ni thu -'h:ni: is px'ih i wilh panna ul' diagunal intm'sartin; imran". l, the upc' inlursnciig vuds nl" which mniniunicats: with the hn iudinally oxtcnding hua-vs 3'. Thcsdiagunal bn'cs 4 n'- !wnt into pa'alhl 'ehliun with [va a-rt. in th s lnnu'itndinaily vxt-idinp hoi-Us JV as shown, :dul ha \'c their l'rvv vnls dispusml :dam: thu cutting: mlm-s of thu wings 2 and nn opposiin sidcs of the sanv. The hoi-cs -L are pre& orahly of --c-tangla' cmligurztim iii cross section as shnwn ch'a'ly l Vig. -i- (f iha drawing::. whvri-ly a snl'-tantially 'flat sh'van ai" wati-i' is' fvd (u thu uppusie ich- 1 of the wings 2 th'rehy ''arhing all points nl' the hit.

l roni the fun-going: il; nay bo. seen that wh- Lh waLv' nndc' press-ure is supplied to tha hit ii will oll'wt'iu-l i' provoni; gnnlu m: atin-r vai-thy nat-'ial f-u sticking upon the sanu and thua th(` object of tha inveninn has hwn vfl'mrtivuly varrimi (n'at.

As various minn' changes in form. pro poi-tina, and in the mima' details of cnnst'uct-ion may ho i-nsm'icd to without (lt:- 'a'bing f'nn the spirit of this inv ntion, I. (10 not, wish to he limited to the COIISiI'NG- tion hc-.-oin shown and described other than that sot fai-thin the app-ndal claim.

A (hjll hic of the class de. :riht'd comprising a shanh provided with a' pair of dninati-wall\- 'ppnsito longitudinally exten^ling hnrcs and having 0ntof its cnds fiattenc d to form a pair of wings, the lattor being: clisoscd nt right nnglvs to the. plane passing' through tha l'Xt'S of said bores and tortninating in enti-ing edfzas, said shnk being f'tlvr provided with pairs of diag nal inte'scrting ho'cs having une of their ends comanniating with said longitudinlly extendig bores said diagonal botes being bent into mlle relton with respect to said longtuinnlly extending botes and having their other ends located on the opposite sdes of said wings and above the cuttng edges thereof.

In-testimony whereof I have hereunto set my hand in the presence of two subscrib'ng wtnesses.

ROBERT DRURY MARTI N.

VVitesses:

B. F. LUCE, G. `W. HOLLEYMAN. 

